[FlopCpp] Indirect index in flopcpp
Eduardo F. Silva
efsilva at pobox.com
Thu Aug 31 19:27:14 EDT 2006
Hi all,
I am playing with flopcpp and end up having some hard time to model a
indirect index for a set. I believe that is because I am not used to
flopcpp. May be someone could help me.
The problem is simple to define, each combination (s,t) refers to a node n.
In addition, a node n can be associated to different (s,t) pairs.
My goal is to define the following constraint below:
nonAnticip(s,t,p)= z(n(s,t),p)==x_flow(s,t,p);
Below I have inserted some additional info about one of my tentative codes.
Thanks,
Eduardo.
MP_set s(nScenarios),
t(nTimePeriods),
p(nPlants),
n(nNodes);
vector<vector<int> > stToNodes(nScenarios,vector<int>(nTimePeriods,0));
for(int is=0;is<nScenarios;is++){ // all scenarios
for(int it=0;it<nTimePeriods;it++){ // all time periods
stToNodes[is][it]=Node->index; //Node->index is of type
"int"
....
MP_variable x_flow(s,t,p),
z(n,p);
MP_constraint nonAnticip(s,t,p);
nonAnticip(s,t,p)= z(n(stToNodes[s][t]),p)==x_flow(s,t,p); // Not
working :-(
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